path: root/chrome/browser/extensions/api/app_current_window_internal/app_current_window_internal_api.cc

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/extensions/api/app_current_window_internal/app_current_window_internal_api.h"

#include "apps/app_window.h"
#include "apps/app_window_registry.h"
#include "apps/ui/native_app_window.h"
#include "base/command_line.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/extensions/api/app_current_window_internal.h"
#include "chrome/common/extensions/api/app_window.h"
#include "chrome/common/extensions/features/feature_channel.h"
#include "chrome/common/extensions/features/simple_feature.h"
#include "extensions/common/switches.h"
#include "third_party/skia/include/core/SkRegion.h"

namespace app_current_window_internal =
    extensions::api::app_current_window_internal;

namespace Show = app_current_window_internal::Show;
namespace SetBounds = app_current_window_internal::SetBounds;
namespace SetMinWidth = app_current_window_internal::SetMinWidth;
namespace SetMinHeight = app_current_window_internal::SetMinHeight;
namespace SetMaxWidth = app_current_window_internal::SetMaxWidth;
namespace SetMaxHeight = app_current_window_internal::SetMaxHeight;
namespace SetIcon = app_current_window_internal::SetIcon;
namespace SetBadgeIcon = app_current_window_internal::SetBadgeIcon;
namespace SetShape = app_current_window_internal::SetShape;
namespace SetAlwaysOnTop = app_current_window_internal::SetAlwaysOnTop;

using apps::AppWindow;
using app_current_window_internal::Bounds;
using app_current_window_internal::Region;
using app_current_window_internal::RegionRect;

namespace extensions {

namespace {

const char kNoAssociatedAppWindow[] =
    "The context from which the function was called did not have an "
    "associated app window.";

const char kDevChannelOnly[] =
    "This function is currently only available in the Dev channel.";

const char kRequiresFramelessWindow[] =
    "This function requires a frameless window (frame:none).";

const char kAlwaysOnTopPermission[] =
    "The \"alwaysOnTopWindows\" permission is required.";

const int kUnboundedSize = apps::AppWindow::SizeConstraints::kUnboundedSize;

}  // namespace

bool AppCurrentWindowInternalExtensionFunction::RunImpl() {
  apps::AppWindowRegistry* registry =
      apps::AppWindowRegistry::Get(GetProfile());
  DCHECK(registry);
  content::RenderViewHost* rvh = render_view_host();
  if (!rvh)
    // No need to set an error, since we won't return to the caller anyway if
    // there's no RVH.
    return false;
  AppWindow* window = registry->GetAppWindowForRenderViewHost(rvh);
  if (!window) {
    error_ = kNoAssociatedAppWindow;
    return false;
  }
  return RunWithWindow(window);
}

bool AppCurrentWindowInternalFocusFunction::RunWithWindow(AppWindow* window) {
  window->GetBaseWindow()->Activate();
  return true;
}

bool AppCurrentWindowInternalFullscreenFunction::RunWithWindow(
    AppWindow* window) {
  window->Fullscreen();
  return true;
}

bool AppCurrentWindowInternalMaximizeFunction::RunWithWindow(
    AppWindow* window) {
  window->Maximize();
  return true;
}

bool AppCurrentWindowInternalMinimizeFunction::RunWithWindow(
    AppWindow* window) {
  window->Minimize();
  return true;
}

bool AppCurrentWindowInternalRestoreFunction::RunWithWindow(AppWindow* window) {
  window->Restore();
  return true;
}

bool AppCurrentWindowInternalDrawAttentionFunction::RunWithWindow(
    AppWindow* window) {
  window->GetBaseWindow()->FlashFrame(true);
  return true;
}

bool AppCurrentWindowInternalClearAttentionFunction::RunWithWindow(
    AppWindow* window) {
  window->GetBaseWindow()->FlashFrame(false);
  return true;
}

bool AppCurrentWindowInternalShowFunction::RunWithWindow(AppWindow* window) {
  scoped_ptr<Show::Params> params(Show::Params::Create(*args_));
  CHECK(params.get());
  if (params->focused && !*params->focused)
    window->Show(AppWindow::SHOW_INACTIVE);
  else
    window->Show(AppWindow::SHOW_ACTIVE);
  return true;
}

bool AppCurrentWindowInternalHideFunction::RunWithWindow(AppWindow* window) {
  window->Hide();
  return true;
}

bool AppCurrentWindowInternalSetBoundsFunction::RunWithWindow(
    AppWindow* window) {
  // Start with the current bounds, and change any values that are specified in
  // the incoming parameters.
  gfx::Rect bounds = window->GetClientBounds();
  scoped_ptr<SetBounds::Params> params(SetBounds::Params::Create(*args_));
  CHECK(params.get());
  if (params->bounds.left)
    bounds.set_x(*(params->bounds.left));
  if (params->bounds.top)
    bounds.set_y(*(params->bounds.top));
  if (params->bounds.width)
    bounds.set_width(*(params->bounds.width));
  if (params->bounds.height)
    bounds.set_height(*(params->bounds.height));

  bounds.Inset(-window->GetBaseWindow()->GetFrameInsets());
  window->GetBaseWindow()->SetBounds(bounds);
  return true;
}

bool AppCurrentWindowInternalSetMinWidthFunction::RunWithWindow(
    AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetMinWidth::Params> params(SetMinWidth::Params::Create(*args_));
  CHECK(params.get());
  gfx::Size min_size = window->size_constraints().GetMinimumSize();
  min_size.set_width(params->min_width.get() ?
      *(params->min_width) : kUnboundedSize);
  window->SetMinimumSize(min_size);
  return true;
}

bool AppCurrentWindowInternalSetMinHeightFunction::RunWithWindow(
    AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetMinHeight::Params> params(SetMinHeight::Params::Create(*args_));
  CHECK(params.get());
  gfx::Size min_size = window->size_constraints().GetMinimumSize();
  min_size.set_height(params->min_height.get() ?
      *(params->min_height) : kUnboundedSize);
  window->SetMinimumSize(min_size);
  return true;
}

bool AppCurrentWindowInternalSetMaxWidthFunction::RunWithWindow(
    AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetMaxWidth::Params> params(SetMaxWidth::Params::Create(*args_));
  CHECK(params.get());
  gfx::Size max_size = window->size_constraints().GetMaximumSize();
  max_size.set_width(params->max_width.get() ?
      *(params->max_width) : kUnboundedSize);
  window->SetMaximumSize(max_size);
  return true;
}

bool AppCurrentWindowInternalSetMaxHeightFunction::RunWithWindow(
    AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetMaxHeight::Params> params(SetMaxHeight::Params::Create(*args_));
  CHECK(params.get());
  gfx::Size max_size = window->size_constraints().GetMaximumSize();
  max_size.set_height(params->max_height.get() ?
      *(params->max_height) : kUnboundedSize);
  window->SetMaximumSize(max_size);
  return true;
}

bool AppCurrentWindowInternalSetIconFunction::RunWithWindow(AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV &&
      GetExtension()->location() != extensions::Manifest::COMPONENT) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetIcon::Params> params(SetIcon::Params::Create(*args_));
  CHECK(params.get());
  // The |icon_url| parameter may be a blob url (e.g. an image fetched with an
  // XMLHttpRequest) or a resource url.
  GURL url(params->icon_url);
  if (!url.is_valid())
    url = GetExtension()->GetResourceURL(params->icon_url);

  window->SetAppIconUrl(url);
  return true;
}

bool AppCurrentWindowInternalSetBadgeIconFunction::RunWithWindow(
    AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetBadgeIcon::Params> params(SetBadgeIcon::Params::Create(*args_));
  CHECK(params.get());
  // The |icon_url| parameter may be a blob url (e.g. an image fetched with an
  // XMLHttpRequest) or a resource url.
  GURL url(params->icon_url);
  if (!url.is_valid() && !params->icon_url.empty())
    url = GetExtension()->GetResourceURL(params->icon_url);

  window->SetBadgeIconUrl(url);
  return true;
}

bool AppCurrentWindowInternalClearBadgeFunction::RunWithWindow(
    AppWindow* window) {
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV) {
    error_ = kDevChannelOnly;
    return false;
  }

  window->ClearBadge();
  return true;
}

bool AppCurrentWindowInternalSetShapeFunction::RunWithWindow(
    AppWindow* window) {

  if (!window->GetBaseWindow()->IsFrameless()) {
    error_ = kRequiresFramelessWindow;
    return false;
  }

  const char* whitelist[] = {
    "0F42756099D914A026DADFA182871C015735DD95",  // http://crbug.com/323773
    "2D22CDB6583FD0A13758AEBE8B15E45208B4E9A7",

    "EBA908206905323CECE6DC4B276A58A0F4AC573F",
    "2775E568AC98F9578791F1EAB65A1BF5F8CEF414",
    "4AA3C5D69A4AECBD236CAD7884502209F0F5C169",
    "E410CDAB2C6E6DD408D731016CECF2444000A912",
    "9E930B2B5EABA6243AE6C710F126E54688E8FAF6",

    "FAFE8EFDD2D6AE2EEB277AFEB91C870C79064D9E",  // http://crbug.com/327507
    "3B52D273A271D4E2348233E322426DBAE854B567",
    "5DF6ADC8708DF59FCFDDBF16AFBFB451380C2059",
    "1037DEF5F6B06EA46153AD87B6C5C37440E3F2D1",
    "F5815DAFEB8C53B078DD1853B2059E087C42F139",
    "6A08EFFF9C16E090D6DCC7EC55A01CADAE840513"
  };
  if (GetCurrentChannel() > chrome::VersionInfo::CHANNEL_DEV &&
      !SimpleFeature::IsIdInWhitelist(
          GetExtension()->id(),
          std::set<std::string>(whitelist,
                                whitelist + arraysize(whitelist)))) {
    error_ = kDevChannelOnly;
    return false;
  }

  scoped_ptr<SetShape::Params> params(
      SetShape::Params::Create(*args_));
  const Region& shape = params->region;

  // Build a region from the supplied list of rects.
  // If |rects| is missing, then the input region is removed. This clears the
  // input region so that the entire window accepts input events.
  // To specify an empty input region (so the window ignores all input),
  // |rects| should be an empty list.
  scoped_ptr<SkRegion> region(new SkRegion);
  if (shape.rects) {
    for (std::vector<linked_ptr<RegionRect> >::const_iterator i =
             shape.rects->begin();
         i != shape.rects->end();
         ++i) {
      const RegionRect& inputRect = **i;
      int32_t x = inputRect.left;
      int32_t y = inputRect.top;
      int32_t width = inputRect.width;
      int32_t height = inputRect.height;

      SkIRect rect = SkIRect::MakeXYWH(x, y, width, height);
      region->op(rect, SkRegion::kUnion_Op);
    }
  } else {
    region.reset(NULL);
  }

  window->UpdateShape(region.Pass());

  return true;
}

bool AppCurrentWindowInternalSetAlwaysOnTopFunction::RunWithWindow(
    AppWindow* window) {
  if (!GetExtension()->HasAPIPermission(
          extensions::APIPermission::kAlwaysOnTopWindows)) {
    error_ = kAlwaysOnTopPermission;
    return false;
  }

  scoped_ptr<SetAlwaysOnTop::Params> params(
      SetAlwaysOnTop::Params::Create(*args_));
  CHECK(params.get());
  window->SetAlwaysOnTop(params->always_on_top);
  return true;
}

}  // namespace extensions